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libiberty: sync with gcc

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This imports the following commits from GCC as of r15-1722-g7682d115402743:
	ca2f7c84927f libiberty: Invoke D demangler when --format=auto
	94792057ad4a Fix up duplicated words mostly in comments, part 1
	20e57660e64e libiberty: Fix error return value in pex_unix_exec_child [PR113957].
	52ac4c6be866 [libiberty] remove TBAA violation in iterative_hash, improve code-gen
	53bb7145135c libiberty: Fix up libiberty_vprintf_buffer_size
	65388b28656d c++, demangle: Implement https://github.com/itanium-cxx-abi/cxx-abi/issues/148 non-proposal
This commit is contained in:
Sam James
2024-06-29 18:11:52 +01:00
parent 6f8b365b65
commit ed8025a576
6 changed files with 118 additions and 21 deletions
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65
libiberty/vprintf-support.c
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@@ -56,6 +56,7 @@ libiberty_vprintf_buffer_size (const char *format, va_list args)
{
if (*p++ == '%')
{
int prec = 0;
while (strchr ("-+ #0", *p))
++p;
if (*p == '*')
@@ -76,8 +77,43 @@ libiberty_vprintf_buffer_size (const char *format, va_list args)
else
total_width += strtoul (p, (char **) &p, 10);
}
while (strchr ("hlL", *p))
++p;
do
{
switch (*p)
{
case 'h':
++p;
continue;
case 'l':
case 'L':
++prec;
++p;
continue;
case 'z':
prec = 3;
++p;
continue;
case 't':
prec = 4;
++p;
continue;
#ifdef _WIN32
case 'I':
if (p[1] == '6' && p[2] == '4')
{
prec = 2;
p += 3;
continue;
}
break;
#endif
default:
break;
}
break;
}
while (1);
/* Should be big enough for any format specifier except %s and floats. */
total_width += 30;
switch (*p)
@@ -88,6 +124,15 @@ libiberty_vprintf_buffer_size (const char *format, va_list args)
case 'u':
case 'x':
case 'X':
switch (prec)
{
case 0: (void) va_arg (ap, int); break;
case 1: (void) va_arg (ap, long int); break;
case 2: (void) va_arg (ap, long long int); break;
case 3: (void) va_arg (ap, size_t); break;
case 4: (void) va_arg (ap, ptrdiff_t); break;
}
break;
case 'c':
(void) va_arg (ap, int);
break;
@@ -96,10 +141,18 @@ libiberty_vprintf_buffer_size (const char *format, va_list args)
case 'E':
case 'g':
case 'G':
(void) va_arg (ap, double);
/* Since an ieee double can have an exponent of 307, we'll
make the buffer wide enough to cover the gross case. */
total_width += 307;
if (!prec)
{
(void) va_arg (ap, double);
/* Since an ieee double can have an exponent of 308, we'll
make the buffer wide enough to cover the gross case. */
total_width += 308;
}
else
{
(void) va_arg (ap, long double);
total_width += 4932;
}
break;
case 's':
total_width += strlen (va_arg (ap, char *));